How many months is 25 weeks pregnant?

25 weeks pregnant puts you in month 6 of pregnancy. Month 6 covers weeks 23 to 27. Providers count in weeks; months are approximate.

How big is the baby at 25 weeks?

At 25 weeks, the baby is about the size of a cauliflower, roughly 34.6 cm long and around 660 g. That is an average; healthy babies vary.

What should I avoid at 25 weeks pregnant?

Nothing changes on the big three: skip alcohol and cigarettes, and keep caffeine below 200 mg a day. Food rules still apply. Stay away from liver, some soft cheeses, unpasteurised milk, raw or undercooked meat or eggs, and shark, swordfish or marlin. At work, heavy lifting is off the list, and you can ask for a risk assessment. On journeys over 4 hours, drink water and move about every 30 minutes or so, as long trips carry a small risk of blood clots. A home Doppler isn't a reliable way to check on your baby.

What symptoms are common at 25 weeks pregnant?

Heartburn, burping, bloating, constipation, piles, leg cramps, headaches, bleeding gums and poor sleep are all common now. Some people also notice brown patches on the face, greasier skin or thicker, shinier hair. These are uncomfortable but not usually a sign of a problem. Call your maternity unit or provider straight away about a severe headache that painkillers don't help, blurred vision or flashing lights, pain below the ribs, or vomiting. The same goes for swelling that comes on suddenly in your face, hands or feet. Any of these could point to pre-eclampsia.

Is cramping normal at 25 weeks pregnant?

Usually, yes. Mild cramps often come from the ligaments that support your bump, or from constipation and wind. This kind of pain tends to ease after a rest, a change of position, a poo or passing wind. Braxton Hicks tightenings may also come and go. Phone your maternity unit or provider at once if cramps come regularly, or come with bleeding, unusual discharge, leaking fluid, or cloudy, pink or red pee. Do the same if strong pain hasn't settled after 30 to 60 minutes of rest.

Can my baby feel me rubbing my belly at 25 weeks?

It may. In a 2015 study, researchers used 4D scans to watch 23 babies between 21 and 33 weeks, so 25 weeks falls inside the range they tested. When mothers touched their bellies, the babies made more arm, head and mouth movements. Babies in the third trimester also yawned, crossed their arms and touched their own bodies more in response. Nobody knows what touch feels like to a baby, but stroking your bump can be a nice way to feel close.

What should I know at 25 weeks pregnant with twins?

Twin pregnancies get closer checks because they carry higher risks. Low iron (anaemia) and pre-eclampsia are both more likely, so don't skip appointments or blood tests. Twins with separate placentas usually have a scan every 4 weeks. Identical twins sharing one placenta need more frequent scans, to watch for twin-to-twin transfusion syndrome. In this condition, blood flows unevenly between the babies. It affects 10 to 15% of twins who share a placenta. Expect your bump to measure larger than your week number.

25 Weeks Pregnant

At 25 weeks pregnant, your baby measures about 34.6 cm, head to heel, and is very active. A loud noise may make the baby jump and kick, and you might notice the odd hiccup. The baby now pees into the fluid around it, and by this stage most of that fluid is urine. It helps cushion the baby and keep its temperature steady. For you, burping, heartburn and some puffiness are common. This page covers the 25-week checkup, when a scan is needed, what your bump measures, what to avoid, which symptoms need a call, and what's different with twins.

What trimester is 25 weeks?

Week 25 is in the second trimester, which runs from week 13 to week 27 (NHS). It is week 13 of 15 in this trimester, and the third trimester starts at week 28.

Week 25 — second trimester, month 6; 15 weeks to go until your due date.
Baby's size — about a cauliflower, ~34.6 cm.

Not sure it's 25 weeks? Try our due date calculator.

How big is your baby at 25 weeks?

Size of a

cauliflower

Length, head to heel

~34.6 cm

Weight

~660 g

Up from a ear of corn last week to a cauliflower now.

Baby development at week 25

The fetus is gaining baby fat, smoothing out the wrinkled skin, and hair is gaining colour and texture. The hands are now fully developed with working nerves, so grasping and fist-making are common. A loud noise may make the fetus jump and kick, and hiccups are common. About the size of a cauliflower.

What an ultrasound shows at 25 weeks

There's usually no scan at 25 weeks. In the UK, first-time mothers have a midwife appointment this week instead. The midwife checks your blood pressure, measures your bump to track the baby's growth, and asks about the baby's movements and your mental health. They also talk through your choices for the birth. In the US, the glucose test for gestational diabetes is due between 24 and 28 weeks, so it may fall around now.

You'd usually only have a scan if something needs a closer look. One example is a bump that measures well ahead of or behind your weeks. A tape measure gives a rough guide. A scan gives a more exact size. When the number is off, the cause is often simple. Your due date may be a little out, or your baby may just be a bit smaller or bigger than average.

If you do see your baby on a scan now, expect a lot of movement. Around this stage, babies change position often and respond to sound and light, and the nervous system is maturing quickly.

Your body at 25 weeks

Strong, frequent kicks
Hemorrhoids or constipation
Trouble sleeping
Possible carpal-tunnel tingling in the hands

Your belly at 25 weeks

At 25 weeks, the measurement from your pubic bone to the fundus is usually about 25 cm, give or take 2 cm. As the baby takes up more room, it squeezes the space where your stomach sits. That's why burping, a burning feeling in your chest and feeling full quickly are so common now. Smaller meals, sitting up straight when you eat, and cutting back on rich, spicy or fatty food and on caffeine can all help.

Some puffiness in your face, hands and feet is common and is usually from water retention. Mention it at your next visit anyway, so your blood pressure can be checked. Tingling or pins and needles in your fingers, often worse at night, can be carpal tunnel syndrome. When pregnancy is the cause, it may ease by itself within a few months, and a wrist splint worn at night can help.

Tips for week 25

Fibre and water help with constipation and hemorrhoids
A pregnancy pillow can improve sleep
Take breaks from repetitive hand tasks if you feel tingling

25 Weeks Pregnant: your questions

What trimester is 25 weeks?: Week 25 is in the second trimester, which runs from week 13 to week 27 (NHS). It is week 13 of 15 in this trimester, and the third trimester starts at week 28.
How many months is 25 weeks pregnant?: 25 weeks pregnant puts you in month 6 of pregnancy. Month 6 covers weeks 23 to 27. Providers count in weeks; months are approximate.
How big is the baby at 25 weeks?: At 25 weeks, the baby is about the size of a cauliflower, roughly 34.6 cm long and around 660 g. That is an average; healthy babies vary.
What should I avoid at 25 weeks pregnant?: Nothing changes on the big three: skip alcohol and cigarettes, and keep caffeine below 200 mg a day. Food rules still apply. Stay away from liver, some soft cheeses, unpasteurised milk, raw or undercooked meat or eggs, and shark, swordfish or marlin. At work, heavy lifting is off the list, and you can ask for a risk assessment. On journeys over 4 hours, drink water and move about every 30 minutes or so, as long trips carry a small risk of blood clots. A home Doppler isn't a reliable way to check on your baby.
What symptoms are common at 25 weeks pregnant?: Heartburn, burping, bloating, constipation, piles, leg cramps, headaches, bleeding gums and poor sleep are all common now. Some people also notice brown patches on the face, greasier skin or thicker, shinier hair. These are uncomfortable but not usually a sign of a problem. Call your maternity unit or provider straight away about a severe headache that painkillers don't help, blurred vision or flashing lights, pain below the ribs, or vomiting. The same goes for swelling that comes on suddenly in your face, hands or feet. Any of these could point to pre-eclampsia.
Is cramping normal at 25 weeks pregnant?: Usually, yes. Mild cramps often come from the ligaments that support your bump, or from constipation and wind. This kind of pain tends to ease after a rest, a change of position, a poo or passing wind. Braxton Hicks tightenings may also come and go. Phone your maternity unit or provider at once if cramps come regularly, or come with bleeding, unusual discharge, leaking fluid, or cloudy, pink or red pee. Do the same if strong pain hasn't settled after 30 to 60 minutes of rest.
Can my baby feel me rubbing my belly at 25 weeks?: It may. In a 2015 study, researchers used 4D scans to watch 23 babies between 21 and 33 weeks, so 25 weeks falls inside the range they tested. When mothers touched their bellies, the babies made more arm, head and mouth movements. Babies in the third trimester also yawned, crossed their arms and touched their own bodies more in response. Nobody knows what touch feels like to a baby, but stroking your bump can be a nice way to feel close.
What should I know at 25 weeks pregnant with twins?: Twin pregnancies get closer checks because they carry higher risks. Low iron (anaemia) and pre-eclampsia are both more likely, so don't skip appointments or blood tests. Twins with separate placentas usually have a scan every 4 weeks. Identical twins sharing one placenta need more frequent scans, to watch for twin-to-twin transfusion syndrome. In this condition, blood flows unevenly between the babies. It affects 10 to 15% of twins who share a placenta. Expect your bump to measure larger than your week number.

Useful at week 25

Are Tums safe in pregnancy? — for the heartburn that often builds this week
Coffee in pregnancy — the daily caffeine limit, explained
Flying while pregnant — check airline rules before a late-pregnancy trip
Twin probability calculator — for fun: your chance of twins
Pregnancy weeks to months — 25 weeks is in month 6 — the full chart

← All weeks: the full pregnancy week-by-week guide

Sources

Checked against the following public guidance on October 2, 2026. Advice can differ between countries; your doctor, nurse or midwife can apply it to you.